Hobatio l



(No Model.)

H. L. PIERCE.

SADDLE FOR THE TOP ROLLS 0F SPINNING MACHINES. No. 298,621. Patented May13, 1884.

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HORATIO .TJ. PIERCE, OE PROVIDENCE, B-HODE ISLAND.

SADDLE FOR THE TOP ROLLS OF SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 298,621, dated May 13,1884:.

Application filed March 27, 1883. Renewed April 10, 1884. (No model.)

To all whom, it may concern/.-

Be it known that I, IIORATIO L. PIERCE, of Providence, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Saddles for the Top ltolls of Spinning-Machines;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being had to theaccompanying drawings, which form part of this specification.

My invention relates to saddles for the top rolls of spinninganachines;and it consists in a saddle which is made of a single piece of metalthat is bent so as to form a spring, and which has suitablebearing-pieces applied to its under side, all of which will be morefully described hereinafter.

The object of my invention is to produce a saddle which is made of asingle piece, so as to be quickly and easily adjusted, and which willexert a-greater pressure upon the front than the rear rolls, and whichneeds no lubrication.

In the accompanying drawings, Figure 1 is a side elevation of a saddleand top rolls embodying my invention. Fi g. 2 is a perspective of thesaddle alone.

A represents the top rolls, and B the lower rolls, and O the saddle. Thesaddle is formed of a single piece of elastic metal, bent, preferably,as shown, and which has a piece of rawhide or other suitable material,I), secured to one end, and a shorter piece, E, secured to the other.The piece, D,of rawhide is made long enough to rest upon two of the toprolls at once, while the shorter piece will rest upon a single rollalone. This saddle is placed upon the rolls so that the longer piece I)will rest upon the two front rolls and the short piece upon the-rearone. In the top of this saddle are formed a number of notches, in whichthe stirrup G catches, and which serve as guides in the adjustment ofthe stirrup. The stirrup has its upper end to catch over the top of thesaddle in one of the notches, and has its lower end to extend downwardany suitable distance, so that the weighted lever I can be passedthrough the slot in its lower end. Upon the outer end of the lever,which has its fulcrum in the lower end of the stirrup, is placed asuitable weight, which may be adjusted back and forth, and thus regulatethe pressure of the saddle upon the rolls.

I do not limit myself to the precise construction of the stirrup and theregulating-lever, as here shown, for they may be varied at will withoutdeparting from the spirit of my invention.

As a greater pressure is necessary for the front than the rear rolls,the direct weight of the weighted lever and the stirrup comes upon thestirrup near its front end, and thus exerts a much greater pressure atthis point than upon the rear one. The front set of the rolls runs aboutfive times as fast as the middle ones, and the greatest weight isconsequently required on the top roll of this front set. The rolls thatreceive the sliver run the slowest, and require a less weight. Thecotton comes into the machine between the rolls under the rear extensionof the saddle farthest removed from the notches or slots.

This saddle, being made in a single piece, does, away with all necessityof any parts to be adjusted so that they will bear the right relation toeach other, and requires no further experience than to simply place thesaddle in position. The saddles heretofore used have been made in twoparts, and as they have to be often taken off to clean the roll, theyare liable to be improperly adjusted when they are returned to position,and hence had work results. Being made in two parts, and being in adifficult place to get at, they may be dropped, and the time of theoperator is lost, and the machine may be idle when it should be at work.The saddle, being in the form of a spring,adapts itself to the roll, andmaintains the proper degree of pressure on each, and conforms itself tothe unevenness or inequality of the rolls, if they should be out oftrue, which often happens. The bend, curve, or arch in the springstiffens it, and gives it the proper degree of pressure on the rearroll.This saddle may be applied to one, two, or more top rolls, and is notconfined to spinning-frames proper, and is adapted to any drawing-rolls.

Rawhide or similar animal substance is used in connection with thesaddle, and which rawhide, having oil in its substance, requires nouniformity of action in the rolls that is indispensable to good work,and great damage to the work results when this uniformity is not itcontains in itself.

maintained. The size of the roving is made to vary, making irregularwork. The roving is broken, causing waste and the stoppage of themachine. The use of oil also results in discoloring the sliver, and whenthe oil gets in the rolls fibers adhere to the roll, causing waste andirregular pressure by widening the size of the roll, and necessitatingthe stoppage of the machine and the removal. of the roll to clean it.Rawhide works uniformly without any oil or lubrication whatever beyondwhat Lubricating oil also loosens and dissolves the cement by which theleather covering is secured to the frame, softens the leather, makes itstretchy, and causes it to wrinkle, and necessitates the re-covering ofthe roll.

Having thus described my invention, I claim- 1. A saddle for the toprolls of spinningmachincs,which is formed from a singlepiece ofmaterial, which is bent so as to form a spring, substantially as shown.

2. A saddle for the top rolls of spinningmachines, formed from a singlepiece of elastic material, which is bent so as to form a spring, andwhich has a bearing-piece attached to each of its ends, substantially asdescribed.

3. A saddle formed from a single piece of metal, and bent so as to haveits ends separated a suitable distance from each other, and a suitablebearing attached to each end, substantially as set forth. I

4. In a saddle, the combination of a single piece of metal, which isbent, as shown, so as to form a spring,with pieces of rawhide,which areattached to the ends of the spring, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

HORATIO L. PIERCE.

